multiterminal

Multiterminal is a term used in computing to describe configurations in which multiple user terminals are connected to a single host computer or to a network resource, enabling concurrent user interaction with that resource.

Historically, multiterminal setups were common in time-sharing systems from the 1960s onward. Centralized mainframes or minicomputers served many terminals, such as teletypewriters or CRT devices, each providing an independent session. With advances in networking and software, multiterminal capabilities have expanded to include both physical terminals and virtual sessions, allowing diverse ways for users to interact with shared systems.

Physical multiterminals refer to multiple terminals connected directly to a host via serial lines or local networks, where each terminal presents its own separate user interface and session. Virtual multiterminals describe scenarios where a single host maintains multiple login sessions, or a single user operates multiple sessions within one device, such as through remote access (SSH, Telnet) or through terminal multiplexers.

Software and protocols underpinning multiterminal use include terminal emulators, remote access protocols, and session management tools. Multiplexers like GNU Screen and tmux enable multiple terminal windows or panes within a single session, while modern operating systems provide virtual consoles and support numerous concurrent remote or local sessions.

Applications of multiterminal concepts include shared computing resources, server administration, classroom labs, and multi-user development environments. Considerations in multiterminal deployments include security, resource management, and access control to ensure isolation between sessions and users.

See also: time-sharing, terminal emulator, SSH, Telnet, tmux, GNU Screen, virtual console.